Color image segmentation using parallel OptiMUSIG activation function

  • Authors:
  • Sourav De;Siddhartha Bhattacharyya;Susanta Chakraborty

  • Affiliations:
  • Department of Computer Science and Information Technology, University Institute of Technology, The University of Burdwan, Burdwan 713104, India;Department of Information Technology, RCC Institute of Information Technology, Kolkata 700015, India;Department of Computer Science and Technology, Bengal Engineering and Science University, Shibpur 711103, India

  • Venue:
  • Applied Soft Computing
  • Year:
  • 2012

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Abstract

Segmentation of the different feature based data in a dataset is a challenging proposition in the image processing community. There exist different techniques to solve this problem satisfactorily. A color image is an example of three-dimensional dataset and it consists of a collection of three primary color intensity features. In this article, we focus on the segmentation of true color test images, based on all possible combination of color intensity features. A multilevel sigmoidal (MUSIG) activation function that is applied in the self-organizing neural network architecture is quite efficient enough to segment multilevel gray level intensity images. The function uses equal and fixed class responses, ignoring the heterogeneity of image information content. The optimized version of MUSIG (OptiMUSIG) activation function for the self-organizing neural network architecture can be generated with the optimized class responses from the image content and can be used to effectively segment multilevel gray level intensity images as well. This article proposes a parallel version of the OptiMUSIG (ParaOptiMUSIG) activation function with the optimized class responses for the individual features with a parallel self-organizing neural network architecture to segment true color images. The optimized class responses are generated in parallel using a genetic algorithm based optimization technique. A standard objective function is applied to measure the quality of the segmented images in the proposed genetic algorithm-based optimization method. Results of segmentation of two real life true color images by the ParaOptiMUSIG activation function show better performances over those obtained with a conventional non-optimized MUSIG activation applied separately on the color gamut.